Abstract
Currently, biodegradable Mg-based implants used in clinical practice barely degrade after more than ten months of use. To achieve controlled degradation, we prepare a novel surface system on a MgMnAg alloy composed of a ceramic layer produced by plasma electrolytic oxidation (PEO) and a polypyrrole (PPy)-loaded polycaprolactone (PCL) composite coating. The surface system exhibits superior corrosion resistance to prevent premature failure of the Mg alloy. After near-infrared (NIR) irradiation, the photothermal conversion effect of PPy promotes the transformation of PCL from a rubbery state to a viscous state, thereby facilitating the infiltration of external electrolytes for a dramatically increased degradation rate. As a result, the reduction of icorr and |Z|0.01Hz by 4 orders of magnitude after NIR irradiation could be achieved. Hence, this work provides a new strategy for remotely regulating the degradation rate of Mg-based implants.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
